Delivebing party-colored wabps in weaving



" E. fs. siGELow, orf ctiNfroiy;Massaciiusnrrs l DELIVERING Pantry-COLORED .wnnrs 1N wEnvING.

e specification of Letters Patent Neissa, dated March is, i851.

3 To" all whom, t may concern Be itknown that I, E. B. BIGELow, of Clinton, in `the 'State of `Massa-` chusetts, have invented a new and useful Method of Delivering Out the Figuringe Warps in Looms for Weaving Tapestry Carpets, and that the `followingis a full, clear, and eXact description of the same,

` reference loeirro` had `to the accompanying drawings, `making part `of this specification,

Figure `l is a plan, Fig. 2, a sideelevation and Fig. `3 a` longitudinal vertical section.

The same letters indicate like parts in all` the figures.` f e i As in the weaving of tapestry carpets the figures are produced by warps on which the figure has `been printed of such greater cloth of the required proportions, it follows that unless fthesewarps be` delivered` out in due proportions` for. given lengths of cloth the figure produced on the cloth `willnot match. If the igureswhich are printed on `the warps continued of uniform length until woven into .the cloth, a positive delivery motion togive out the figuring warps in measured lengths `forgiven lengths of cloth would effect the purpose; but it is found in practice that after the warps have been printed,` the printed figures-from some cause or causes not necessary to mention-L vary inlength,l and hence, if delivered out `by la positive and unvarying motion, the figures produced on the woven fabricfwill not match. y i

The object of my invention is to avoid as far as possible any defect in thefigures on the cloth by` reason of any irregularity in "the printed figures onthe warps and to this endr The nature of` my invention consists in the employment ofa shifting clamp or` clampsV which is or are clamped onto the warps at certain determined points in the/length of the printed figure, when the` said clamp or clamps is or are `used in combination with endless belts or their equivalents, which have a given and positive motion to deliver :out the figuring warps, the said clamp or clamps having certain determinedpointsof attachment with the belts. By this means the clamp is secured to the warps at the determined pointsin the length of the printed loom.` frame, the lathe, c the lathe shaft, Z al the two ground warps, and e `the arrangement be done so well if the figuring warps `were figure and then attached to the givenpoints on thebelts, so that if the figure on the warps be too long, they will be loose and hence more willube taken up informing the pile, and' iftoofshort they willbe drawn tight and less will` be taken up, thusinsuring the` production of-figures that'` will i match.

of `parts for cutting the pile and `taking up the cloths after they have been separated. length that when taken up to form the pile, w the figure shall appear on the face of the There is a. frame f, jointed to the .upper-1 ends oftwo sets of arms laf/L, and z', i on two rock shafts j and 7c, the latter of which has an arm Z extending down and provided `with a. wrist Vfittedto a cam groovem onda cam `shaft n which derives motion from the lathe shaft by cog wheels o, p, so that the `cam shaft shall make one revolution to three of the cam moves the` frame `toward jthe lathe'and back. The object of this is `to carry forward the figuring warps toward the lathe at the` Itime `the pileis tied into thecloth, `so that the reed shall beat up the pile properly into and between the two cloths, which could not tight at thetime.` i

There are two rollers g, g, one ateach `end of this frame, each carrying a small `spur wheel r outside' of the frame, and the cogs of these wheels engage the threads of two endless screws s, s, onel at each end of a horizontal shaft t,lso that the twowrollers` shall move with the same velocity. This shaft carries a small `drum u (which is free lathe shaft; sothat every` third.` pick the` y to turn thereon), to the periphery` of which r drum is attached` a cord o that winds aroundf it, the` otherend being attachedto a lever fw,

which is depressed at the required timeby a cam` or tappet m on the cam shaft, so; that when the lever is depressed the drum is rotated in one direction, and after the cam has passed, the drum is turned back again by the tension of a spring 1, to which there is a cord a attachedthat winds around the said drum in the reversed direction of the other cord y and also attached to the drum. In

lever, the shaft will be carried around with it, but not on the return motion. At the rear end this shaft t carries a crank c to .the wrist of which is connected a spring d',

so that after the shaft has been rotated in one direct-ion, it is then held to prevent it from turning back with the drum, and this arrangement also insures the turning of this shaft one entire revolution at each operation without the necessity ofturning the drum one entire revolution; for the moment the crank has passed the upper dead point the tension of the spring draws it down to complete t-he revolution.

By the above arrangement the two rollers on the vibrating frame are caused to rotate to the saine extent at each operation. But instead of this arrangement any other mechanical means may be substituted, which will impart the required motion to the rollers. Around the two rollers there pass two bands or belts e, e', one near each end which are made to travelby the motion imparted to the rollers. rIhe figuring warps pass from the yarn beam f and around the seat and' over the two rollers Q, g. And the bands are pressed onto the forward one of these two rollers by a pressure roller g, so that .they shall only be moved forward by the positive and regular motion of the roller. The warps pass between the aws o-f a clamp L so that it (the clamp) can be clamped onto the warps at any part of their length which may be desired, and then the ends of the clamp are secured to the two bands by fitting onto pins projecting therefrom at the required distance apart to be determined by the figure printed on the warps.

Any given point is selected on the printed figures from which to measure and there the clamp is secured so as to hold all the warps firmly that they shall not slip through, and the clamp is then attached to the belts, and the warps in the process of weaving are then delivered out by the regular and positive motion ofthe rollers g, q, and belts passing around them, and after the required and determined length has been woven the clamp is loosened and reclamped onto the warps, at the corresponding point in the next printed figure, and the clamp secured to the next point of attachment on the belts and so on until all the fabric is complet-ed. From the above it will be observed that as the points of attachment of the clamp to the belts are equal distances, and the motion of the rollers and belts is positive, that is, a given and measured length for each tying pick and bea-t of the lathe, and the woven cloth is taken up by a measured and positive motion,it follows as a necessary consequence that if the printed figure on the warps be too long, they will beslack between the woven cloth and the clamp and hence will be more freely taken up in the process of weaving, and that if the printed figure be too short less will be taken up, thus throwing the irregularity into the thickness instead of the length of the fabric, producing figures thereon that will match.

In weaving piled fabrics single, to which my said invention is also applicable, the mot-ion of the delivery apparatus toward the latter to yield to the beat thereof may be dispensed with, as in this case the pile is not so long as in weaving such fabrics double, and therefore the yielding motion is not so import-ant.

Instead of the belts passing around the two rollers, two wheels one on each side, and on the saine shaft or on separate shafts moving with equal velocity may be substituted, by providing the peripheries of these wheels with the requisite means for attaching the clamps to them, as in the case of the belts. And instead of one clamp two or more may be used by shifting them alternately. And although I have herein pointed out modifications of the mode of applicationof the principle of my invention, yet I do not wish to be understood as limiting myself to these, as other modes involving the principle or mode of operation of my invent-ion may be substituted.

That I claim as my invention and desire to secure by Letters Patent, is-

The method snbstanti ally as herein specified of producing figures that will match on tapestry carpets or other fabrics woven with printed warps by the employment of a clamp or clamps to be clamped onto the warps, as specified, in combination with belts or their equivalents having a positive delivery motion and to which the said clamp or clamps can be attached at given distances, as specified.

E. B. BIGELOV.

Witnesses:

ALEX. ROBERT BRowNE, C. A. WM. BRowNE. 

